Jon Huertas and Seamus Dever are spotted on the set of Castle last week in Downtown Los Angeles (August 24). The two play Detectives Kevin Ryan and Javier Esposito (or as they're called "Ryan and Esposito") on the show.
Series stars Stana Katic and Nathan Fillion were also spotted - check out their pics in the gallery. And don't miss the Castle page for more pics from set.
It's being reported that True Blood star Jessica Tuck will be guest-starring on Castle this season. She'll play a wealthy museum benefactor who becomes the lead suspect in a murder investigation.
Don't miss the season premiere of Castle September 19.